linux-kernel - Re: [PATCH 0/2] crypto: arm64/crct10dif - refactor and implement non-Crypto Extension version

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Message-ID: <20180904052134.5ax5j374gubxpo4s@gondor.apana.org.au>
Date:   Tue, 4 Sep 2018 13:21:34 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     linux-crypto@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        martin.petersen@...cle.com, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, jeff.lien@....com
Subject: Re: [PATCH 0/2] crypto: arm64/crct10dif - refactor and implement
 non-Crypto Extension version

On Mon, Aug 27, 2018 at 05:38:10PM +0200, Ard Biesheuvel wrote:
> The current arm64 CRC-T10DIF code only runs on cores that implement the
> 64x64 bit PMULL instructions that are part of the optional Crypto
> Extensions, and falls back to the highly inefficient C code otherwise.
> 
> Let's provide a SIMD version that is twice as fast as the C code even on
> a low end core like the Cortex-A53, and is time invariant and much easier
> on the D-cache.
> 
> Some performance numbers at the bottom.
> 
> Ard Biesheuvel (2):
>   crypto: arm64/crct10dif - preparatory refactor for 8x8 PMULL version
>   crypto: arm64/crct10dif - implement non-Crypto Extensions alternative
> 
>  arch/arm64/crypto/crct10dif-ce-core.S | 314 +++++++++++++++-----
>  arch/arm64/crypto/crct10dif-ce-glue.c |  14 +-
>  2 files changed, 251 insertions(+), 77 deletions(-)

All applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt